Thin film chip electric component

Abstract

A thin film chip electronic component, and more particularly, a thin film power inductor includes a body including a support member including a through hole, an inner coil supported by the support member in a thickness direction, and a magnetic material sealing the support member and the inner coil; and a plurality of external electrodes disposed on an external surface of the body. The inner coil includes a coil body and first and second end portions. Each of the first and second end portions includes a connection portion extending from the coil body and a contact portion extending from the connection portion, the connection portion being a portion that changes a winding direction of the coil body, and the contact portion is directly connected to one of the plurality of external electrodes.

What is claimed is: 
     
         1 . A thin film chip electronic component comprising:
 a body having first and second end surfaces facing each other in a length direction and including a support member including a through hole, an inner coil supported by the support member in a thickness direction, and a magnetic material sealing the support member and the inner coil; and   a plurality of external electrodes disposed on an external surface of the body,   wherein the inner coil includes a coil body and first and second end portions, the first and second end portions being exposed to the first and second end surfaces, respectively, and electrically connected to the plurality of external electrodes,   each of the first and second end portions includes a connection portion extending from the coil body and a contact portion extending from the connection portion in a direction different from a winding direction of the coil body, and the contact portion is directly connected to one of the plurality of external electrodes,   a maximum width Wmax of the contact portion is equal to or greater than 0.8 times and equal to or smaller than 1.2 times a width Wo of an outermost coil pattern of the coil body in contact with the connection portion, and   a corner edge at which an upper surface of the contact portion and inner surfaces of the plurality of external electrodes contact with each other is composed of one line segment in a width direction perpendicular to the length and thickness directions.   
     
     
         2 . The thin film chip electronic component of  claim 1 , wherein the contact portion is perpendicular to the connection portion. 
     
     
         3 . The thin film chip electronic component of  claim 1 , wherein a cross-sectional shape of the contact portion is a rectangular shape. 
     
     
         4 . The thin film chip electronic component of  claim 1 , wherein a length of the contact portion extending in the width direction of the body is equal to or more than ½ of a maximum distance between outermost coil patterns of the coil body along the width direction of the body. 
     
     
         5 . The thin film chip electronic component of  claim 1 , wherein the contact portion extends to two opposing sides of the body in the width direction with respect to the connection portion. 
     
     
         6 . The thin film chip electronic component of  claim 5 , wherein a line width of the connection portion in the width direction is greater than the width Wo of the outermost coil pattern of the coil body that is in contact with the connection portion. 
     
     
         7 . The thin film chip electronic component of  claim 1 , wherein the contact portion is connected to one end of the connection portion and extends only in one direction with respect to the width direction of the body. 
     
     
         8 . The thin film chip electronic component of  claim 7 , wherein a direction in which the contact portion of the first end portion extends is opposite to a direction in which the contact portion of the second end portion extends with respect to the width direction of the body. 
     
     
         9 . The thin film chip electronic component of  claim 7 , wherein a line width of the connection portion is equal to the width of the outermost coil pattern of the coil body that is in contact with the connection portion. 
     
     
         10 . The thin film chip electronic component of  claim 1 , wherein the plurality of external electrodes include first and second external electrodes, the first external electrode is physically connected to the first end portion, and the second external electrode is physically connected to the second end portion. 
     
     
         11 . A thin film chip electronic component comprising:
 a body having first and second end surfaces facing each other in a length direction and including a support member including a through hole, an inner coil supported by the support member in a thickness direction, and a magnetic material sealing the support member and the inner coil; and   a plurality of external electrodes disposed on an external surface of the body,   wherein the inner coil includes a coil body and first and second end portions, the first and second end portions being exposed to the first and second end surfaces, respectively, and electrically connected to the plurality of external electrodes,   each of the first and second end portions includes a connection portion extending from the coil body and a contact portion extending from the connection portion in a direction different from a winding direction of the coil body, and the contact portion is directly connected to one of the plurality of external electrodes, and   the contact portion extends to at least one side of the body in a width direction perpendicular to the length and thickness directions, the contact portion extending in a straight line without having an opening in the center thereof.   
     
     
         12 . The thin film chip electronic component of  claim 11 , wherein a maximum width Wmax of the contact portion is equal to or greater than 0.8 times and equal to or smaller than 1.2 times a width Wo of an outermost coil pattern of the coil body in contact with the connection portion. 
     
     
         13 . The thin film chip electronic component of  claim 11 , wherein the contact portion extends only in one direction with respect to the width direction of the body. 
     
     
         14 . The thin film chip electronic component of  claim 11 , wherein the contact portion extends to two opposing sides of the body in the width direction with respect to the connection portion.